Metal-reinforced-concrete timbering for mine-shafts.



D. W. SHEPARD. METAL RBINFORCED CONCRETE TIMBBRING POR MINE SHAPTS.

APPLICATION FILED JAN: 25. 1909.

Patented May 9, 1911.

z SHEETS-SHEET v1.

D. W. SHBPARD.

METAL REINFOROBD CONCRETE TIMBERING FOR MINE SHAFTS.

APPLICATION rILED JAN. z5. 1909.

992,073. Patented May 9, 1911.

2 SHEETS-SHEET 2.

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p DARWIN W. SHEPARD, OF DENVER, COLORADO, ASSIGNOR TO THE SHEPARD PATENT CEMENT MINE AND TUNNEL TIMBERING COMPANY, F DENVER, COLORADO.

METAL-REINFORCED-CONCRETE TIMBERING FOR MINE-SHAFTS.

.y a citizen of the'United States, residing in the city and county of Denver and State of Colorado, have invented certain new and `useful VImprovements in Metal-Reinforced- Concrete Timber-ing for M ine-Shafts; and I do declarefthe following to be a full, clear,

-and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying' drawings, and to the lletters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in metal reinforcedv timbering, more specially intended for use in mining shafts or other shafts which require timbering.

The meta-l reinforcement employed in this invention is similar to that set forth in my eo-pending application entitled metal reinforced concrete timbering for mine tunnels, Serial Number 474,005 the structure being composed of beams in which metal rods are longitudinally disposed, being employed in connection with metal stirrups transversely arranged.

Having briefly outlined my improved construction I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof.

In this drawing Figure 14 is a top plan view of my improved timbcring construction for mining shafts, showing the same arranged for a double compartment shaft. Fig. 2 is a side elevation of the same. Fig. 3 is a View illustrating the metal reinforcement of one of the beams, the shape of the latter being indicated by dotted lines. Fig. 4 is a view looking in the direction of arrow 4, Fig. 3. This isa View looking in the direction of either arrow a or I), Fig. 1-.the metal reinforcement of the beam only being shown. Fig. 5 `is a top plan.view of the structure arranged for a single compartment shaft. Fig. 6 is a view similar to Fig. 3, illustrating the metal reinforcement of a beam of slightly different construction from that shown in Fig. 3, as indicated by the dotted lines `.'hieh show the form or external shape of the beam. This is a"view looking in the direction of arrow a, Fig.

Specification of Letters Patent. Application flled January 25, 1909. Serial No. 474,004.

-to the thickness of one of the beams.

l-the metal reinforcement, however, only being shown. Fig. 7 is a view looking in the direction of arrow T, Fig. (i. Fig. 8 is a cross section taken on the line S-S Fig. 7.

The same reference characters indicate the same parts in all of the views.

Referring first more particularly to Figs. 1 and 2, let the numeral 5dcsignate eachof a series of beams arranged one above another, and constituting a vertically disposed central partition of a doublecompartment shaft, such as illustrated in Figs. 1 and 2. The extremities of these beams are reduced, forming tenons (i, which are engaged by the inner extremities S of the beams 7. These extremities 8 are plain, while the opposite extremities of the beams 7 arc reduced, forming tenons 9, which are engaged by corresponding tenons 110 of the end beams 12, the tenons 9 and l() together being just equal It is believed that thisconstruction will be readily understood without further ex|.)lanation in detail since the n'ianner of timbering the two compartments of the shaft will be readily understood from an inspection of the drawing.

'.lhe metal reinforcement of each beam 12 consists of rods 13 and 14, arranged lengthwise of the beam, and having their bodyT por- .tions located near the inner surface of the beam when the latter is employed for shaft tin'ibering purposes, in order to give the beam the greatest Strength where it is subjected to the maximum strain. The rod 13 of each beam 12 has its extremities formed into eyes 15, each of which is located in one of the tenons 10 of the beam. As shown in the drawing, each beam 12 is provided with two rods 14, whose body portions lie in the same plane as the body portion of the rod 13, and whose extremities are bent outwardly, as shown at 16, for anchoring purposes. These reinforcing rods are embedded in the beam, being placed in the mold when the beam is formed.

Cooperating with the reinforcing rods 13 and 14, are metal stirrups. Whose closed ex- Iatented May 9,1911.

tremities are Vdesigmited 17, the same being located adjacent to the inner surface ofthe beam or that where the main portions of the reinforcing rods are located. The sides 18 of the stirrups extend outwardly from the extremities of the part 17, and are bent .tremity thereof, while its opposite extremity toward each other, as shown at 19, for the l purpose of better' anchorage. These metal stirrfups are also inclined as they extend outwardly from the inner surface ot the beam, one set of the stirrups being inclined toward one end of the beam, and another set of stirrups being inclined toward the opposite end of the beam. As shown in the drawing, each set of stirrups in the sense just used, consists ofthree,.the sets being arranged on opposite sides of a plane passed transversely through the center of the beam.

The metal reinforcement of each beam 7 is substantially similar to that of the beams 12, as just explained, except that the other reinforcing rod, which is designated 13 in the beam 1Q, is so much shorter than the beam 7, since the latter is devoid of one end tenen, and is designated This rod 20 has a single eye l5, formed on one exis bent outwardly, as shown at 2l. rl`he otherrods constitutingv the metal reinforcementof the beam T are the same as in beam 1Q, and are, therefore, given the same rei:-

The tenons l() the various beams arci provided with apertures Q2 adapted to re ceive vertically disposed rods 23, which are inserted therein when the beams are assemi bled for shaft timbering purposes. The partition beams 5 are each` provided i with a centrally located reinforcing rod 24C l whose extremities are bent into eyes 25, loi cated within the tongues or tenons 6. The tenons of these beams 5 are also provided l with openings designated QG, through which rods 2T are passed when the beams are asi sembled to i'o'rm the central partition ot the double compartment shatt. i In -timbering a single con'ilpnirtment 1 5, the partition timl ln fact, l

shaft, such as shown in nig. bers 5, ot course, are not required.' I the entire tin'ibering ot the shaft consists of i beams l2 so airanfred that their tenoncd exl vbeam being composed.' of concrete having tremities interlock in a manner that will be readily understood..

Having thus described my invention, what I claim is: f

l. A timbering structure for shafts, comprising beams arranged one above another and 'Whose extremities are provided with tenons on one side adapted to interlock, each material having embedded therein reinforcing rods, longitudinally disposedl one of the said rods its extremities .embedded in the tenons of the bars, while the other rods are provided with bent extremities, terminating ata point aboveI the body of the beams on the opposite side from the tenons, substantially as described.

A timbering structure for shafts, composed of beams arranged one above the other, and having tenons at their extremities on one side thereof, and arranged to interlock, each beam being composed .of hardened plastic material, and having embedded therein longitudinally disposed, reinforcing rods, one rod ot' each beam having its extremities bent into eyes located at opposite extremities oli'the. beam, within the tenons, while the .other rods of each beam are .relatively shorter and provided with bentextremities located near the ends of the body portion oi the beams, on opposite sides from the tenons, the bars also having metal stirrups arranged in sets transve sets ot stirrups occupying an inclined position in opposite directions, and \f'erticall \f' disposed rods passing through the tenons of the beams and the eyes ot' the rods, substantially as described.

In testimony whereof I ailiri mysignature in presence ot` two witnesses.

DRlVIN \V.

sHnrAnn.

lVitnesses: l

Jnssin F. llonau'r, A. Alill-.nur (Y1-BRIEN,

.ly thereof, the said. 

